kinsing | 946b33e09f78d4e498539f7f3a21bcec0956f4ff5731451ddbacb7ff527252f5

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2024 17:55

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General

Target

2024-01-25_7931c7a2457da7124da40c942d2aaf9f_cryptolocker.exe
Size

38KB
MD5

7931c7a2457da7124da40c942d2aaf9f
SHA1

3b80cd57196649cd46ae44aa6cddd7ddc1b5c739
SHA256

946b33e09f78d4e498539f7f3a21bcec0956f4ff5731451ddbacb7ff527252f5
SHA512

aed9d26bde6ffd5d4fce70e11e821dfe9c4a758d818a4d75587610e5877b796a2d8d36d2548f97b3a9382a9d462812759fda2ada25f04f7dc414d7ca4c2db003
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlxur:b/yC4GyNM01GuQMNXw2PSjHPbSuYlC

Score

10^/10

kinsing loader

Malware Config

Signatures

Kinsing
Kinsing is a loader written in Golang.
loader kinsing

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\retln.exe	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-01-25_7931c7a2457da7124da40c942d2aaf9f_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-25_7931c7a2457da7124da40c942d2aaf9f_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

retln.exe

pid process

2384 retln.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2384	retln.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-01-25_7931c7a2457da7124da40c942d2aaf9f_cryptolocker.exe

description	pid	process	target process
PID 4284 wrote to memory of 2384	4284	2024-01-25_7931c7a2457da7124da40c942d2aaf9f_cryptolocker.exe	retln.exe
PID 4284 wrote to memory of 2384	4284	2024-01-25_7931c7a2457da7124da40c942d2aaf9f_cryptolocker.exe	retln.exe
PID 4284 wrote to memory of 2384	4284	2024-01-25_7931c7a2457da7124da40c942d2aaf9f_cryptolocker.exe	retln.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_7931c7a2457da7124da40c942d2aaf9f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_7931c7a2457da7124da40c942d2aaf9f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4284

C:\Users\Admin\AppData\Local\Temp\retln.exe
"C:\Users\Admin\AppData\Local\Temp\retln.exe"
2⤵
- Executes dropped EXE
PID:2384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
38KB

MD5
54935ab33309ed8ce2fbb92551b5274f

SHA1
d0b3557763afcb86e5653460162a20e5e075be19

SHA256
450718f20ba7ce7388e3220aa0bda6b4d39041547a8f2571821b54254be37e6a

SHA512
bc97269116d33129606ddfea6b42f0376ffd2db6c3fa85a6d28ff52d625a62f08daaf32a23cd125c52ff2c4f2a73fa282b495e4e2bc5aa214fbb5cee834af2ce

Download Submit
memory/2384-19-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4284-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4284-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4284-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download